[jboss-jira] [JBoss JIRA] Commented: (GPD-178) ClassCastException using Process Designer 3.1.0SP1
Yanis Kekatos (JIRA)
jira-events at lists.jboss.org
Sat Nov 24 10:22:24 EST 2007
[ http://jira.jboss.com/jira/browse/GPD-178?page=comments#action_12388998 ]
Yanis Kekatos commented on GPD-178:
-----------------------------------
There is no bug. The only bug is a usability one at this screenshot [ http://wiki.jboss.org/wiki/attach?page=JbpmGettingStarted%2FGPD_process_view.png ] that shows gdp.xml highlighted.
> ClassCastException using Process Designer 3.1.0SP1
> --------------------------------------------------
>
> Key: GPD-178
> URL: http://jira.jboss.com/jira/browse/GPD-178
> Project: JBoss jBPM GPD
> Issue Type: Bug
> Components: jpdl
> Affects Versions: jBPM jPDL Designer 3.1.0.SP1
> Environment: Windows XP, Java 1.6.0_02, Eclipse 3.3, suite_3.2.2 (which packages GPD 3.1.0SP1)
> Reporter: Ian Priest
> Assigned To: Koen Aers
>
> Get a ClassCastException using the Process Designer to open the gpd.xml in the websales example provided with the 3.2.2 suite download.
> The exception is (full stack trace to follow)
> java.lang.ClassCastException: org.jbpm.gd.jpdl.model.ProcessDefinition cannot be cast to org.jbpm.gd.common.model.GenericElement
> The problem seems to lie in class GenericElementXmlAdapter, which deals with the classes though the SemanticElement interface, which both classes do implement. The following class reproduces the runtime issue and demonstrates the faulty cast:
> import org.jbpm.gd.common.model.GenericElement;
> import org.jbpm.gd.common.model.SemanticElement;
> import org.jbpm.gd.jpdl.model.ProcessDefinition;
> public class Play {
> public static void main(String[] args) {
>
> ProcessDefinition pd = new ProcessDefinition();
> SemanticElement se = (SemanticElement)pd;
> GenericElement ge = (GenericElement)se;
> }
> }
> which gives a runtime error:
> Exception in thread "main" java.lang.ClassCastException: org.jbpm.gd.jpdl.model.ProcessDefinition cannot be cast to org.jbpm.gd.common.model.GenericElement
> at Play.main(Play.java:15)
> See also the forum discussion at http://www.jboss.com/index.html?module=bb&op=viewtopic&t=121355
> Full stack trace:
> !ENTRY org.eclipse.ui 4 0 2007-10-16 11:12:33.685
> !MESSAGE Unable to create editor ID org.jbpm.gd.jpdl.editor: org.jbpm.gd.jpdl.model.ProcessDefinition cannot be cast to org.jbpm.gd.common.model.GenericElement
> !STACK 0
> java.lang.ClassCastException: org.jbpm.gd.jpdl.model.ProcessDefinition cannot be cast to org.jbpm.gd.common.model.GenericElement
> at org.jbpm.gd.common.xml.GenericElementXmlAdapter.initialize(Unknown Source)
> at org.jbpm.gd.common.editor.Editor.getSemanticElement(Unknown Source)
> at org.jbpm.gd.common.editor.Editor.initSourcePage(Unknown Source)
> at org.jbpm.gd.common.editor.Editor.createPages(Unknown Source)
> at org.jbpm.gd.jpdl.editor.JpdlEditor.createPages(Unknown Source)
> at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:283)
> at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:661)
> at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:426)
> at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:592)
> at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:299)
> at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:179)
> at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:268)
> at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
> at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:400)
> at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1256)
> at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1209)
> at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1604)
> at org.eclipse.ui.internal.PartStack.add(PartStack.java:499)
> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:103)
> at org.eclipse.ui.internal.PartStack.add(PartStack.java:485)
> at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:112)
> at org.eclipse.ui.internal.EditorSashContainer.addEditor(EditorSashContainer.java:63)
> at org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorAreaHelper.java:217)
> at org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAreaHelper.java:207)
> at org.eclipse.ui.internal.EditorManager.createEditorTab(EditorManager.java:774)
> at org.eclipse.ui.internal.EditorManager.openEditorFromDescriptor(EditorManager.java:673)
> at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:634)
> at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2719)
> at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2633)
> at org.eclipse.ui.internal.WorkbenchPage.access$12(WorkbenchPage.java:2625)
> at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2577)
> at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
> at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2572)
> at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2556)
> at org.eclipse.ui.actions.OpenWithMenu.openEditor(OpenWithMenu.java:340)
> at org.eclipse.ui.actions.OpenWithMenu.access$0(OpenWithMenu.java:328)
> at org.eclipse.ui.actions.OpenWithMenu$3.handleEvent(OpenWithMenu.java:226)
> at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:938)
> at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3682)
> at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3293)
> at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389)
> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)
> at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)
> at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
> at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)
> at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)
> at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
> at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106)
> at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:153)
> at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)
> at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)
> at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)
> at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> at java.lang.reflect.Method.invoke(Unknown Source)
> at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:504)
> at org.eclipse.equinox.launcher.Main.basicRun(Main.java:443)
> at org.eclipse.equinox.launcher.Main.run(Main.java:1169)
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